Graph and label as either direct or indirect the relationships you would expect to find between (a) the number of inches of rainfall per month and the sale of umbrellas, (b) the amount of tuition and the level of enrollment at a university, and (c) the popularity of an entertainer and the price of her concert tickets.

SAMPLE SOLUTION

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Part a:

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Step 2 of 3

Part b:

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Part c:

Feedback:Consider the following
situations:

Part a: The number of inches of rainfall per month and the sale
of umbrellas: There is likely a direct relationship between the
number of inches of rainfall per month and the sale of umbrellas
(more rain implies more umbrellas).

Part b: The amount of tuition and the level of enrollment at a
university: There is likely an inverse relationship between the
amount of tuition and the level of enrollment at a university. As
tuition increases less students will attend the university.

Part c: The popularity of an entertainer and the price of her
concert tickets: There is likely a direct relationship between the
popularity of an entertainer and the price of her concert tickets.
The more popular the entertainer, the more people are willing to
pay to see her in concert.